Is it necessary to spend money to enter Zhangjiakou Ke Ling factory?

No. The difficulty of entering the Zhangjiakou factory in Ke Ling depends on the position you apply for. If it is a general worker, you don't need to spend money. If it is a technical job or a management position, you need to have certain professional qualities and skills. You can enter the factory through the recruitment website or the talent market, but you don't need to spend money to enter.